Paper box



(No Model.)

G. A.. BISLER."

PAPER BOX.

Patented J1'11y8, 1884'.

U ITED STATES PATENT OFFICE.

eUsrAv A. BISLER, or PHILADELPHIA, PENNSYLVANIA.

PAPER BOX.

SPECIFICATION forming part of Letters Patent No. 301,791, dated July 8, 1884.

Application filed May 16, 1884. (No model.)

To all whom it 71mg; concern:

Be it known that I, GUsTAv A. BrsLER, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania,-have invented a new and useful Improvement in Paper Boxes, of which the following is a specification.

My invention relates to an improvement in locking the ends of paper boxes, as hereinro after fully described in the body of the specification, and set forth in the claimappended thereto. In the accompanying drawings, which make.

a part of this specification, Figure 1 is a face View of a box-blank, A, cut and scored ready for folding and locking the parts together.

videit at right angles thereto, u'rherebydahe parts 0 and c are formed for the sides of the box, and cl andd for the top and bottom, re-

spectively. A narrow strip, a", is also formed between the scores a a, which, in folding the longitudinal parts of the box together, is pasted at the open edge of the bottom d on the inner surface, in the usual manner. a

Outside of the scores a a, at the endsof the side 0, are the parts 6 e, which form the ends of the box. They have slots ffand ff, curved at their ends, as shown in Figs. 1 and 2, to facilitate the springing inward of the parts f f between the. curves to give free assage to locking-tongues, hereinafter descri ed.

At the ends of the side 6" there are flaps g g, which are bifurcated to form tongues Eli and h h, which at their outer edges have barbs i i' and 2' i, so that when the ends 0 e are folded into their-normal position,-with inside end 5 parts or lining, e c and e e, folded against them, the locking of the ends is easily effected by pressing the tongues h lt of each flap g inward to allow the barbs i t to pass through the ends of the slots ff, and as the tongues spring back and the flaps lie flat on the ends 6 e the barbs come past the ends of the slots and lock them securely.

The box is easily unlocked to open it by pressing the end of a finger between the ends e and the flaps g at the middle of the opening k, whereby the flaps are curved outward, and the barbs i are drawn within the ends of the slots f, and thereby admit of a free outward passage of the tongues ,g.

A modification of the openings is between the tongues h h of the flaps g is shown in Fig.

3, in which thelength of the openings is increased at their inward part to impart an easy spring tothe flaps, and thus facilitate the connection of the tongues h with the slots f in looking the ends, or their dis nneotion in unlocking them. ckvww I claim as my invention 1 In a paper box, the bifurcated flaps g g, hav- 7o ing tongues h h and h h, respectively, provided at their outer edges Withbarbsi '5, in combination with the ends 6 e of the box, having slotsff andff for locking the ends, substantially as described.

. GUSTAV BISLER.

WVitnesses: f

THoMAs J. BEWLEY, STEPHEN UsrIcK. 

